113049581 has 2 divisors, whose sum is σ = 113049582. Its totient is φ = 113049580.

The previous prime is 113049571. The next prime is 113049593. The reversal of 113049581 is 185940311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112572100 + 477481 = 10610^2 + 691^2 .

It is an emirp because it is prime and its reverse (185940311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113049581 - 2¹⁰ = 113048557 is a prime.

It is a super-2 number, since 2×113049581² = 25560415528551122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113049551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56524790 + 56524791.

It is an arithmetic number, because the mean of its divisors is an integer number (56524791).

Almost surely, 2^113049581 is an apocalyptic number.

It is an amenable number.

113049581 is a deficient number, since it is larger than the sum of its proper divisors (1).

113049581 is an equidigital number, since it uses as much as digits as its factorization.

113049581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 113049581 is about 10632.4776510463. The cubic root of 113049581 is about 483.5295114322.

Adding to 113049581 its reverse (185940311), we get a palindrome (298989892).

The spelling of 113049581 in words is "one hundred thirteen million, forty-nine thousand, five hundred eighty-one".